A soccer player uses her head to hit the ball up in the air from a height of 2 meters with an initial vertical volocity of 5 meters per second. The height h in meters of the ball is given by h = -4.9t2 +5t +2, where t is the time elapsed in seconds. How long will it take the ball to hit the ground if no other players touch it?

using the quadratic formula , please help me , this is eight grade algebra btw